Preview the saved copy after changing a draft.
1. Open the invoice
Go to Invoicing → Invoices and open the intended document. Confirm its customer and current status.
2. Edit the intended fields
Update the customer, dates, items, rates, or notes as appropriate. Review the new total and any validation message.
3. Save first
Open Actions → Save. Wait until the save completes. Closing the editor or opening an older preview is not a substitute for saving.
4. Open a fresh preview
Choose Preview again. Check the changed details and total. If it shows an older version, return, save successfully, and reopen the preview.